Elevator



T. TRESL.

(No Model.)

BLEVTOR.

Patented Peb. 19, 1895.

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TAN TRESL, OF OXFORD, IOWA.

VELEVATOR.

ASPIECIFICATION forming part of LettersPatent No. 534,382, dated February 19, 1895.

Application led -September 4,1894. Serial No. 522,080-V (NQ mOdeL) on the breakage of the lifting rope, and fly.

into operative position to engage with guides or other suitable portion of the well shafting and sustain the weight of the cage or plat# form.

The primary object of the invention is to equip the cage or platform with safety appliances which shall at all times be under the control of the passengers or tender so as to be thrown into operation at a moments notice to check the descent of tne car when required for any purpose, and which at the same time will-be automatic in their action on t-he car descending at an abnormal speed caused by the breakage of the lifting rope, the slipping of the same from the hoisting drum or from any cause tending to let the car drop or descend rapidly. f

The improvement will be more fully understood from the annexed drawings and the following description and is set forth in the subjoined claim.

In the drawings,-Figure L is a central vertical section of an elevator cage showing the application of the invention. Fig. 2f is a horizontal plan `section on the line new of Fig. l.

The letter A represents a ca r of usual construction for carrying freight or passengers, and B the shaft in which the car travels.

O indicates the guides which steady the movements of the car and receive the stress of the levers K by means of which the car is supported when required. Two standards f rise vertically from the cross beam E to which the draft of the elevating rope is applied through the draw bar D which works loosely in the said beam. A pin d and washer mounted on the lower endl of the draw-bar limits the upward movement thereof by engagement with the lower side of the beam E. The standards f have grooves in their inner sides formingguideways for the ends of a bar G. A cross timber II secured at its ends to the upper'ends of the standards is apertured in coincident relation with the beam E to receive vinner ends to the bar fG and pass between the companion pieces constituting the barG and beam E. The outer ends of the levers terminate in a claw kwhich is beveled to a chisel edge so as to bite into the guides C. A counterbalancing weight M hangs suspended Within the car within convenient reach and is connected by cords L with the levers K. These cords pass over guides e and -m provided upon the upper bars J.

The hoisting or elevating rope N is attached o the draw-bar D, and, the latter being secured to the cross-bar G, elevates said c rossbar against the tension of the springs t and the force of the weights I, when carrying the load,` and withdraws the ends of the levers K from engagement with the guides O. Should the hoisting rope slacken for any reason, either by breakage or slipping of the ropes on 'the hoisting drum, the barG will quickly lower by the action of the springs 't and Weights I and project the ends of the levers K into engagement with the guides C and check the descent of the car. Again by drawing down upon the weight M thelevers K can be projected into engagement with the guides O when required even should there be no slacking of the hoisting rope.

The bar O has its ends bent and pivotally attached to sides or braces of the'car and forms a guard to hold goods in place upon the car. There will be similar bars O, one for each side of the car,'and when loading or unloading freight from one side the bar corresponding to the side at which the loading IOC or unloading is to be eected is elevated by simply being thrown up, the other bai remaining down to form the guard.

The weight M is not of sulcienty mass to overbalance the check levers K and is mainly provided to actin the capacity of a pull to be operated from Within the car to apply the check levers when required.

I claim- The combination with an elevator car having vertical standards, a cross-bar guided in its movements by the said standards, and a draw-bar secured tothe crossbar, of Weights and springs appledto the cross-bar to act in opposition to the hoisting or lifting force, I5

TAN TRESL. Y

Witnesses:

ANTON SHEMERLHA,

A. J. WosoBA. 

